Improved Quantum Dot Cellular Automata 4:1 Multiplexer Circuit Unit

Sarkar, Arighna; Mukhopadhyay, Debarka

doi:10.15764/nano.2014.01005

Cited by 5 publications

(2 citation statements)

References 9 publications

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“…Whereas all the logic functions can be built by multiplexers, implementation of multi-input multiplexer in one layer is a remarkable subject. In conventional implementation of multiplexer, there are several structures that have been introduced in [ 12 – 22 ]; all these designs have tried to present improved structure rather than the other. These designs have been implemented using three three-input majority gates in different ways with different propagation delay and consumed cells according to the form of majority gate's concatenation.…”

Section: State-of-the-artmentioning

confidence: 99%

Efficient QCA Exclusive-or and Multiplexer Circuits Based on a Nanoelectronic-Compatible Designing Approach

Chabi

Sayedsalehi

Angizi

et al. 2014

International Scholarly Research Notices

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Quantum-dot cellular automata (QCA) are a transistorless computation approach which encodes binary information via configuration of charges among quantum dots. The fundamental QCA logic primitives are majority and inverter gates which can be utilized to design various QCA circuits. This study presents a novel approach to designing efficient QCA-based circuits based on Boolean expressions achieved from reconfiguration of five-input and three-input majority gates. Whereas the multiplexer and Exclusive-or are the most important fundamental logical circuits in digital systems, designing efficient and single layer structures without coplanar cross-over wiring is advantageous in QCA technology. In order to demonstrate the efficiency and usefulness of the proposed approach, simple and dense multiplexer and Exclusive-or structures are implemented. The proposed designs have significant improvement in terms of area, complexity, latency, and gate count in comparison to previous designs. The correct logical functionalities of presented structures have been authenticated using QCA designer tool.

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Section: State-of-the-artmentioning

confidence: 99%

Efficient QCA Exclusive-or and Multiplexer Circuits Based on a Nanoelectronic-Compatible Designing Approach

Chabi

Sayedsalehi

Angizi

et al. 2014

International Scholarly Research Notices

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“…number of gates in the circuit (N), no of constant inputs required for the specific circuit (CI), no of garbage outputs (GO) for the circuit and the quantum cost (QC) for the given circuit. The most commonly employed reversible gates for the performance analysis on the basis of the power energy and power dissipation are Feynman Gate (FG), Fredkin Gate (FG) and HNG Gate (HG) [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

An Innovative Low Power Reversible ALU for Quantum Processor using QCA

Tiwari*,

Rajiv,

Sharan

et al. 2019

IJITEE

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Landauer stated that “For irreversible computation each loss in information leads to loss of kTln2 joules of heat energy”. This has led to considerable interest in reversible logic. We know that ALU is the most basic part in any processor. Processor quality is determined based on its speed of operation. But, as the size of a processor decreases we face problems like power dissipation and greater delays. So, this paper presents an ALU implemented using reversible logic. This design is a simple way to reduce power dissipation and delay to a certain extent. Verilog HDL programming has been used to make this design. We have used XILINX and CADENCE tool to simulate this model and obtain power and delay analysis.

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